/**
 * @callback Phaser.Types.Tweens.GetStartCallback
 * @since 3.18.0
 *
 * @param {any} target - The tween target.
 * @param {string} key - The target property.
 * @param {number} value - The current value of the target property.
 * @param {integer} targetIndex - The index of the target within the Tween.
 * @param {integer} totalTargets - The total number of targets in this Tween.
 * @param {Phaser.Tweens.Tween} tween - The Tween that invoked this callback.
 *
 * @return {number} - The new value.
 */
